CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 1,906.9	$ 2,237.7	$ 1,285.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	879.5	998.4	1,143.5
Deferred income taxes	(27.2)	205.5	7.9
Share-based compensation expense related to equity incentive plans	177.5	170.4	210.2
Loss on settlement of debt	12.2	8.3	113.4
Amortization of debt discount	37.5	7.2	44.9
Amortization of debt issuance costs	7.3	9.5	11.5
Impairment of intangible assets	1.8	1.8	3.0
Other	(26.1)	(1.8)	(11.4)
Changes in operating assets and liabilities, excluding impact of acquisitions:
Decrease (increase) in accounts receivable	161.6	(232.7)	(74.9)
Decrease (increase) in inventories	12.8	(483.2)	(177.8)
(Decrease) increase in accounts payable and accrued liabilities	(148.4)	323.4	192.7
Change in other assets and liabilities	(64.2)	404.5	79.4
Change in income tax payable	(38.5)	(28.0)	14.8
Net cash provided by operating activities	2,892.7	3,621.0	2,842.7
Cash flows from investing activities:
Proceeds from sales of assets	0.4	0.9	14.1
Proceeds from capital-related government incentives	6.0	0.0	0.0
Investments in other assets	(113.4)	(114.2)	(121.7)
Capital expenditures	(285.1)	(486.2)	(370.1)
Net cash used in investing activities	(392.1)	(599.5)	(477.7)
Cash flows from financing activities:
Proceeds from borrowings on Revolving Credit Facility	6,271.0	5,935.0	4,176.0
Proceeds from borrowings on Revolving Credit Facility	(6,371.0)	(7,234.1)	(5,123.5)
Proceeds from borrowings on 2025 Term Loan Facility	750.0	0.0	0.0
Proceeds from issuance of Commercial Paper	9,039.1	0.0	0.0
Repayments of Commercial Paper	(7,688.7)	0.0	0.0
Proceeds from issuance of senior notes	994.7	0.0	997.0
Repayment of senior notes	(3,400.0)	0.0	(1,000.0)
Payments on settlement of convertible debt	(132.8)	(170.4)	(424.7)
Deferred financing costs	(3.0)	0.0	(8.5)
Proceeds from sale of common stock	82.1	82.3	70.5
Tax payments related to shares withheld for vested RSUs	(61.1)	(75.8)	(84.2)
Repurchase of common stock	(982.1)	(945.8)	(425.6)
Payment of cash dividends	(911.5)	(695.3)	(503.8)
Capital lease payments	(1.6)	(0.8)	(0.8)
Net cash used in financing activities	(2,414.9)	(3,104.9)	(2,327.6)
Net increase (decrease) in cash and cash equivalents	85.7	(83.4)	37.4
Cash and cash equivalents, and restricted cash at beginning of period	234.0	317.4	280.0
Cash and cash equivalents, and restricted cash at end of period	$ 319.7	$ 234.0	$ 317.4